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Multiply 21/40 with 15/40

This multiplication involving fractions can also be rephrased as "What is 21/40 of 15/40?"

21/40 × 15/40 is 63/320.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 21/40 × 15/40 = 21 × 15/40 × 40 = 315/1600
  3. After reducing the fraction, the answer is 63/320

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